scholarly journals Stacking of InAs/InP(001) quantum wires studied by in situ stress measurements: Role of inhomogeneous stress fields

2004 ◽  
Vol 84 (23) ◽  
pp. 4723-4725 ◽  
Author(s):  
David Fuster ◽  
Marı́a Ujué González ◽  
Luisa González ◽  
Yolanda González ◽  
Teresa Ben ◽  
...  
Keyword(s):  
Quantum Wires ◽  
In Situ Stress ◽  
Stress Fields ◽  
Stress Measurements ◽  
In Situ Stress Measurements

Size and critical thickness evolution during growth of stacked layers of InAs/InP(001) quantum wires studied by in situ stress measurements

2003 ◽  
Vol 794 ◽  
Author(s):  
David Fuster ◽  
María Ujué González ◽  
Luisa González ◽  
Yolanda González ◽  
Teresa Ben ◽  
...  
Keyword(s):  
Critical Thickness ◽  
Quantum Wires ◽  
High Energy ◽  
In Situ Stress ◽  
Ex Situ ◽  
Stress Measurements ◽  
Transmission Electron ◽  
In Situ Stress Measurements ◽  
20 Nm

ABSTRACTSize and spatial distribution homogeneity of nanostructures is greatly improved by making stacks of nanostructures separated by thin spacers. In this work we present in situ and in real time stress measurements and reflection high energy electron diffraction (RHEED) observations and ex situ transmission electron microscopy (TEM) characterization of stacked layers of InAs quantum wires (QWr) separated by InP spacer layers, d(InP), of thickness between 3 and 20 nm. For d(InP) < 20 nm, the amount of InAs involved in the newly created QWr from the 2nd stack layer on, exceeds that provided by the In cell. Our results suggest that in those cases InAs 3D islands formation starts at the P/As switching and lasts during further InAs deposition. We propose an explanation for this process that is strongly supported on TEM observations. The results obtained in this work imply that concepts like the existence of a critical thickness for 2D-3D growth mode transition should be revised in correlated QWr stacks of layers.

Estimation of the present-day stress field using in-situ stress measurements in the Alxa area, Inner Mongolia for China's HLW disposal

2017 ◽  
Vol 220 ◽  
pp. 76-84 ◽  
Author(s):  
Jianju Du ◽  
Xianghui Qin ◽  
Qingli Zeng ◽  
Luqing Zhang ◽  
Qunce Chen ◽  
...  
Keyword(s):  
Stress Field ◽  
Inner Mongolia ◽  
In Situ Stress ◽  
Stress Measurements ◽  
In Situ Stress Measurements
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